offhand
🇺🇸
/ˌɔːfˈhænd/
🇬🇧
/ˌɒfˈhænd/
acting without much care or interest
His offhand way of responding made me feel unimportant.
他随意的回应方式让我感觉不重要。
without preparing or thinking in advance
I can't remember the details offhand.
我想不起来那些细节。